The key problems and future direction of ecosystem services research

The article discusses on the key problems and the trends of future direction of ecosystem service research. First it reviews the achievements of ecosystem service research, then summarizes the present situation of research of ecosystem service in China, pointing out the main existing problems in value appraisal of ecology service: Ecology service value is measured by simple quantification and double counted; The same appraisal system are applied to different regions and different scales; static method is used to appraise dynamic ecosystem. It holds that the evaluation model in ecosystem service research is not very reasonable, and the method of substitution somewhat farfetched; that subjective factors influence the measure result s; ecology compensation research lags back;and the research lacks driving factors analysis of ecology service function and study on service function forecast and early warning model; and that the researches do not connect ecology service value appraisal with ecological security research. Finally, the article points out the future direction of research